TW201433329A - Deep magnetic field generating module and electromagnetic thermotherapy apparatus - Google Patents

Abstract

A deep magnetic field generating module includes a first coil unit, a second coil unit, and a permeability material. The second coil unit is connected to the first coil unit and disposed around the first coil unit horizontally. The permeability material has relative permeability larger than 100, and covers at least one of the first coil unit and the second coil unit. An electromagnetic thermotherapy apparatus is also disclosed in the invention. By the permeability material which has high relative permeability and covers at least one of the first coil unit and the second coil unit, the magnetic field intensity and the electromagnetic induction efficiency of the deep magnetic field generating module and the electromagnetic thermotherapy apparatus can be enhanced a lot.

Description

Deep magnetic field generating module and electromagnetic heat treatment device

The invention relates to a generating module and an electromagnetic heat treatment device, in particular to a deep magnetic field generating module and an electromagnetic heat treating device.

Existing thermal treatments for tumors include microwave hyperthermia, radiofrequency ablation hyperthermia, and ultrasound focused hyperthermia. Among them, microwave hyperthermia and radiofrequency ablation hyperthermia are directly inserted into the needle electrode in the tumor; microwave thermotherapy uses the microwave radiator at the end of the microwave electrode to generate thermal effect, while radiofrequency ablation hyperthermia uses the RF current of the electrode needle. It is converted into heat energy by ionization, causing coagulative necrosis of local tumor tissue, thereby achieving the purpose of treating tumors. However, the cost of treatment in the above manner is quite high, and causes a great pain to the patient.

Therefore, there is a method of electromagnetic heat treatment in which an alternating magnetic field is applied to an electromagnetic needle to cause an eddy current to be converted into heat, thereby burning the tumor tissue, which can greatly reduce the treatment cost and patient suffering. In this way, the applied electromagnetic field is very important.

Therefore, how to provide a deep magnetic field generating module and an electromagnetic thermal therapy device can improve the intensity of the deep magnetic field, thereby improving the electromagnetic induction performance and the quality of treatment, and is one of the current important topics.

In view of the above problems, an object of the present invention is to provide a deep magnetic field generating module and an electromagnetic thermal therapy device capable of improving the intensity of a deep magnetic field, thereby improving electromagnetic induction performance and treatment quality.

To achieve the above objective, a deep magnetic field generating module according to the present invention comprises a first coil unit, a second coil unit and a magnetically permeable material. The second coil unit is coupled to the first coil unit and horizontally surrounds the first coil unit. The relative permeability of the magnetically permeable material is greater than 100, and covering at least one of the first coil unit and the second coil unit.

In one embodiment, one of the diameters of the second coil unit is between 1.5 and 5 times the diameter of one of the first coil units.

In an embodiment, the first coil unit and the second coil unit each comprise a coil or a plurality of interconnected coils.

In one embodiment, the first coil unit and the second coil unit each comprise a single coil, a plurality of turns of concentric coils, a pancake coil, or a combination thereof.

In an embodiment, at least one of the first coil unit and the second coil unit is in a fluid.

In one embodiment, the magnetically permeable material comprises a soft ferrite, a molybdenum permalloy powder core, a high magnetic flux powder core, an amorphous material, or a combination thereof.

In an embodiment, the magnetically permeable material encloses the first coil unit and the second coil unit.

In one embodiment, the deep magnetic field generating module further includes a magnetic field limiting component, the material of which includes a low magnetic permeability material, and the first coil unit is at least partially disposed in the magnetic field limiting component, and the second coil component is disposed around the magnetic field limiting component. .

In one embodiment, the deep magnetic field generating module further includes two electrical contacts, wherein one electrical contact is connected to the first coil unit, and the other electrical contact is connected to the second coil unit.

To achieve the above object, an electromagnetic thermal therapy apparatus according to the present invention comprises any of the deep magnetic field generating modules and an electromagnetic thermal therapy needle as described above. The electromagnetic heat treatment needle is disposed adjacent to one side of the deep magnetic field generating module and senses a magnetic field generated by the deep magnetic field generating module to generate heat.

As described above, in the deep magnetic field generating module and the electromagnetic thermal therapy device of the present invention, the first coil unit in the inner circumference generates a concentrated magnetic field, and the second coil unit in the outer periphery generates a large area magnetic field, The magnetic field distribution provides a deep magnetic field. Since the concentrated deep magnetic field can reach the deeper part of the human body, when applied to the electromagnetic heat treatment needle, the deeper tumor can be burned, thereby improving the therapeutic effect, and the required components are very simple, thereby reducing the treatment cost.

The deep magnetic field generating module and the electromagnetic thermal therapy device of the present invention cover at least one of the first coil unit and the second coil unit by a magnetically permeable material having a high relative magnetic permeability, for example, coating the two Can greatly increase the depth generated by the deep magnetic field generating module The strength of the magnetic field can increase the efficiency of the strength compared to the absence of the magnetically permeable material. It is worth mentioning that such a design does not increase the inductance of the overall coil, thereby increasing the real power of the power system, reducing the waste of virtual work, and greatly improving the energy efficiency of the overall electromagnetic heat treatment device. In addition, since the first coil unit of the deep magnetic field generating module is hollow, the doctor can place the heat treatment needle, for example, multi-needle electromagnetic heat treatment can be performed to improve the therapeutic efficiency. In addition, a fluid, such as lower temperature water, may be introduced into the coil tube of the first coil unit and the second coil unit of the present invention to remove the heat generated by the coil and lower the temperature of the coil. In this way, the coil unit can be kept at a low temperature after a period of operation, thereby improving the use efficiency.

1, 1a, 1b, 1c‧‧‧ deep magnetic field generating module

11, 11a‧‧‧ first coil unit

12, 12a‧‧‧second coil unit

13‧‧‧Magnetic materials

14‧‧‧ Magnetic field limiting components

141‧‧‧ top

142‧‧‧ ring

D1, D2‧‧‧ diameter

2‧‧‧Electromagnetic thermal therapy device

20‧‧‧Electromagnetic heat treatment needle

1 is a schematic diagram of a deep magnetic field generating module in accordance with a preferred embodiment of the present invention.

2A is an exploded, isometric view of another deep magnetic field generating module in accordance with a preferred embodiment of the present invention.

2B is a schematic cross-sectional view of the deep magnetic field generating module of FIG. 2A.

3A and 3B are schematic diagrams showing other aspects of a deep magnetic field generating module according to a preferred embodiment of the present invention.

4 is a schematic diagram of an application of an electromagnetic thermal therapy device in accordance with a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a deep magnetic field generating module and an electromagnetic thermal therapy device according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings, wherein like elements will be described with the same reference numerals.

1 is a schematic diagram of a deep magnetic field generating module 1 in accordance with a preferred embodiment of the present invention. As shown in FIG. 1 , the deep magnetic field generating module 1 includes a first coil unit 11 and a second coil unit 12 . The second coil unit 12 is connected to the first coil unit 11 and horizontally surrounds the first coil unit 11. It should be noted that when a horizontal plane is transversely cut, the arrangement in which the first coil unit 11 and the second coil unit 12 can be cut can be defined as the horizontal surround here. Thereby, the first coil unit 11 in the inner circumference can generate a concentrated magnetic field, and the second coil unit 12 in the outer periphery can generate a large area magnetic field, and the two kinds of magnetic field distribution can provide a deep magnetic field.

In addition, the deep magnetic field generating module 1 further includes a magnetic conductive material 13 opposite to The magnetic permeability (μr) is greater than 100 and covers at least one of the first coil unit 11 and the second coil unit 12. The magnetically permeable material 13 may comprise a soft ferrite, a molybdenum permalloy powder core, a high magnetic flux powder core, an amorphous material, or other magnetically permeable material, or a combination thereof. In other embodiments, the relative permeability of the magnetically permeable material 13 can be greater than 1000 or other values. In the present embodiment, the magnetic conductive material 13 covers the first coil unit 11 and the second coil unit 12. In practice, for example, the magnetic conductive material 13 is first disposed on the outer edge of a metal component (for example, by bonding, spraying, wrapping, etc.), and then the metal component is wound into the first coil unit 11 and the second coil unit. 12; however, the invention is not limited thereto. The metal component described above is, for example, a metal wire.

If the diameter of the second coil unit 12 is too large, the area occupied by the deep magnetic field generating module 1 is too large to be practical, and the magnetic field generated by the second coil unit 12 interacts with the magnetic field generated by the first coil unit 11. The effect will be weakened and the depth magnetic field will not perform well. On the other hand, if the diameter of the second coil unit 12 is too small, the range of the magnetic field generated by the second coil unit 12 is not large enough, and the depth of the deep magnetic field is also unsatisfactory. In the present embodiment, preferably, for example, the diameter D2 of one of the second coil units 12 is between 1.5 and 5 times the diameter D1 of one of the first coil units 11, whereby a better depth magnetic field can be provided.

The type of the first coil unit 11 and the second coil unit 12 is not particularly limited in the present invention. For example, the first coil unit 11 and the second coil unit 12 may each include a coil or a plurality of interconnected coils, and the coils are the same or different. The first coil unit 11 and the second coil unit 12 may each comprise, for example, a single turn coil, a multi-turn number of concentric coils, a pancake coil, or a combination thereof. Here, the first coil unit 11 includes a plurality of connected coils and is horizontally spiraled, and the second coil unit 12 includes a coil, and the first coil unit 11 and the second coil unit 12 are connected to each other (not shown). In practice, the first coil unit 11 can be wound and then pulled outward and wound into the second coil unit 12.

The deep magnetic field generating module 1 further includes two electrical contacts (not shown), wherein one electrical contact is connected to the first coil unit 11 and the other electrical contact is connected to the second coil unit 12. The electrical contact is electrically connected to a power source to supply an alternating current to the deep magnetic field generating module 1. In practice, a metal component can be wound into the first coil unit 11 and the second coil unit 12, and the opposite ends of the metal component serve as the electrical contacts.

In addition, at least one of the first coil unit 11 and the second coil unit 12 may be hollow, and the first coil unit, or the second coil unit, or both may have a fluid. In this In an embodiment, the first coil unit 11 and the second coil unit 12 can be realized by a hollow metal coil tube, and the fluid that is introduced is, for example, a cryogenic liquid. The flow system is returned to a cooling device (e.g., a water cooler) whereby the coil unit is cooled. In other embodiments, the fluid can also be a gas. The cooling effect can be achieved, for example, by a phase change of the substance.

2A is an exploded perspective view of another deep magnetic field generating module 1a according to a preferred embodiment of the present invention, and FIG. 2B is a side view of the deep magnetic field generating module 1a. Referring to FIG. 2A and FIG. 2B, in the embodiment, the deep magnetic field generating module 1a includes a first coil unit 11a and a second coil unit 12a, and further includes a magnetic field limiting member 14 and a material thereof. A low magnetic permeability material is included, and a low magnetic permeability system has a relatively low magnetic permeability. Here, the low magnetic permeability material is, for example, a material having a relative permeability of less than 100, such as Fluxtrol 50 and Fluxtrol 559H. The relative magnetic permeability of the above materials is less than 60. In the present embodiment, the first coil unit 11a is a three-dimensional spiral and is at least partially disposed in the magnetic field limiting member 14, and the second coil unit 12a is wound around the magnetic field limiting member 14.

In the present embodiment, the magnetic field limiting member 14 includes a top portion 141 and an annular portion 142. The annular portion 142 is coupled to one side of the top portion 141, and the first coil unit 11a is at least partially disposed within the annular portion 142. The present invention does not particularly limit the shape of the magnetic field limiting member 14, and the emphasis is that the first coil unit 11a is at least partially disposed within the magnetic field limiting member 14, whereby the concentrated effect of the concentrated magnetic field generated by the first coil unit 11a is better. The top portion 141 and the annular portion 142 may be integrally formed or joined by bonding, fitting or other means. Additionally, in other embodiments, the magnetic field limiting element 14 can be provided with perforations to accommodate the application of the electromagnetic thermal therapy needle. For example, a perforation is provided in the top portion 141 of the magnetic field limiting member 14, so that the electromagnetic heat treatment needle can pass through the magnetic field limiting member 14 and the first coil unit 11a, thereby improving the therapeutic performance.

In addition, FIG. 3A and FIG. 3B show other aspects of the deep magnetic field generating module. As shown in FIG. 3A, the magnetic conductive material 13 of the deep magnetic field generating module 1b covers only the first coil unit 11a and does not cover the second coil unit 12a. As shown in FIG. 3B, the magnetic conductive material 13 of the deep magnetic field generating module 1c covers only the second coil unit 12a and does not cover the first coil unit 11a.

The invention does not limit the application range of any of the above-mentioned deep magnetic field generating modules, and can be applied, for example, to industrial heating applications or medical heating applications, and is applied to medical electromagnetic thermotherapy. And with an electromagnetic heat treatment needle as an example.

4 is a schematic diagram of an application of an electromagnetic thermal therapy device 2 in accordance with a preferred embodiment of the present invention. As shown in FIG. 4, the electromagnetic thermal therapy device 2 includes a deep magnetic field generating module 1a and an electromagnetic thermal therapy needle 20. It should be noted that the deep magnetic field generating module 1a can also be replaced by the deep magnetic field generating module of any of the above aspects. The electromagnetic heat treatment needle 20 is disposed adjacent to one side of the deep magnetic field generating module 1a and induces a magnetic field generated by the deep magnetic field generating module 1a to generate heat. Wherein, the electromagnetic heat treatment needle 20 is inserted into a tumor tissue of a human body, and the deep magnetic field generating device 1a is supplied with alternating current to generate a concentrated deep magnetic field, so that an end of the electromagnetic heat treatment needle 2 generates an eddy current. Heating energy, and then burning tumor tissue.

In summary, in the deep magnetic field generating module and the electromagnetic thermal therapy device of the present invention, the first coil unit in the inner circumference generates a concentrated magnetic field, and the second coil unit in the outer periphery generates a large area magnetic field, The magnetic field distribution provides a deep magnetic field. Since the concentrated deep magnetic field can reach the deeper part of the human body, when applied to the electromagnetic heat treatment needle, the deeper tumor can be burned, thereby improving the therapeutic effect, and the required components are very simple, thereby reducing the treatment cost.

The deep magnetic field generating module and the electromagnetic thermal therapy device of the present invention cover at least one of the first coil unit and the second coil unit by a magnetically permeable material having a high relative magnetic permeability, for example, coating the two The strength of the deep magnetic field generated by the deep magnetic field generating module can be greatly improved, and more strength efficiency can be improved than the case without the magnetic conductive material. It is worth mentioning that such a design does not increase the inductance of the overall coil, thereby increasing the real power of the power system, reducing the waste of virtual work, and greatly improving the energy efficiency of the overall electromagnetic heat treatment device. In addition, since the first coil unit of the deep magnetic field generating module is hollow, the doctor can place the heat treatment needle, for example, multi-needle electromagnetic heat treatment can be performed to improve the therapeutic efficiency. In addition, a fluid, such as lower temperature water, may be introduced into the coil tube of the first coil unit and the second coil unit of the present invention to remove the heat generated by the coil and lower the temperature of the coil. In this way, the coil unit can be kept at a low temperature after a period of operation, thereby improving the use efficiency.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1‧‧‧Deep magnetic field generation module

11‧‧‧First coil unit

12‧‧‧second coil unit

13‧‧‧Magnetic materials

D1, D2‧‧‧ diameter

Claims (10)

A deep magnetic field generating module comprises: a first coil unit; a second coil unit connected to the first coil unit and horizontally surrounding the first coil unit; and a magnetically permeable material having a relative permeability greater than 100, and covering at least one of the first coil unit and the second coil unit. The deep magnetic field generating module of claim 1, wherein one of the diameters of the second coil unit is between 1.5 and 5 times the diameter of one of the first coil units. The deep magnetic field generating module of claim 1, wherein the first coil unit and the second coil unit each comprise a coil or a plurality of interconnected coils. The deep magnetic field generating module of claim 1, wherein the first coil unit and the second coil unit each comprise a single coil, a plurality of turns of concentric coils, and a pancake coil. Or a combination thereof. The deep magnetic field generating module of claim 1, wherein at least one of the first coil unit and the second coil unit is in a fluid. The deep magnetic field generating module of claim 1, wherein the magnetic conductive material comprises a soft ferrite, a molybdenum permalloy powder core, a high magnetic flux powder core, an amorphous material or a combination thereof. The deep magnetic field generating module of claim 1, wherein the magnetic conductive material covers the first coil unit and the second coil unit. The deep magnetic field generating module of claim 1, further comprising: a magnetic field limiting component, wherein the material comprises a low magnetic permeability material, and the first coil unit is at least partially disposed in the magnetic field limiting component, The second coil unit is wound around the magnetic field limiting element. For example, the deep magnetic field generating module described in claim 1 further includes: Two electrical contacts, wherein one electrical contact is connected to the first coil unit, and another electrical contact is connected to the second coil unit. An electromagnetic heat treatment device comprising: a deep magnetic field generating module according to any one of claims 1 to 9; and an electromagnetic heat treatment needle adjacent to one side of the deep magnetic field generating module The magnetic field generated by the deep magnetic field generating module is induced to generate heat.